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In a testcross involving F1 dihybrid flies, more parental-type offspring were produced than the recombinant-type offspring. This indicates :
- a)Both of the characters are controlled by more than one gene.
- b)The two genes are located on two different chromosomes.
- c)Chromosomes failed to separate during meiosis.
- d)The two genes are linked and present on the same chromosome.
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
In a testcross involving F1 dihybrid flies, more parental-type offspri...
Yes..correct option is d ..bcz..recombination will take place after crossing over..if 2 genes r present more distantly or on other chromosomes..it is easy 2 crossing..as they are loosely linked..
bt if they are located on the same chromosome it is not at all easy 2 crossing over so both of them are inherited and as there is no crossing take place ..there willl be no recombinant..so they are more parental type..
bt if they are located on the same chromosome it is not at all easy 2 crossing over so both of them are inherited and as there is no crossing take place ..there willl be no recombinant..so they are more parental type..
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In a testcross involving F1 dihybrid flies, more parental-type offspri...
Explanation:
Dihybrid crosses involve the inheritance of two different traits that are controlled by two different genes. When a dihybrid cross is performed, the offspring can have four different combinations of alleles. These combinations are the result of the random assortment of maternal and paternal chromosomes during meiosis. The four possible combinations are:
- Parental type: Offspring that have the same combination of alleles as one of the parents.
- Recombinant type: Offspring that have a new combination of alleles that is different from both parents.
In a testcross involving F1 dihybrid flies, the parental-type offspring were produced more than the recombinant-type offspring. This indicates that the two genes are linked and present on the same chromosome. Here's why:
- When two genes are located on the same chromosome, they are said to be linked. This means that the genes are physically connected and will be inherited together more often than not.
- During meiosis, homologous chromosomes pair up and exchange genetic material through a process called crossing over. This results in new combinations of alleles on the chromosomes.
- However, if two genes are linked, they will not be separated by crossing over as often as genes that are on different chromosomes. This means that the parental combinations of alleles will be more common than the recombinant combinations.
- In the case of the F1 dihybrid flies, the fact that more parental-type offspring were produced than recombinant-type offspring indicates that the two genes controlling the traits are linked and located on the same chromosome.
In summary, the observation of more parental-type offspring than recombinant-type offspring in a testcross involving F1 dihybrid flies suggests that the two genes controlling the traits are linked and present on the same chromosome.
Dihybrid crosses involve the inheritance of two different traits that are controlled by two different genes. When a dihybrid cross is performed, the offspring can have four different combinations of alleles. These combinations are the result of the random assortment of maternal and paternal chromosomes during meiosis. The four possible combinations are:
- Parental type: Offspring that have the same combination of alleles as one of the parents.
- Recombinant type: Offspring that have a new combination of alleles that is different from both parents.
In a testcross involving F1 dihybrid flies, the parental-type offspring were produced more than the recombinant-type offspring. This indicates that the two genes are linked and present on the same chromosome. Here's why:
- When two genes are located on the same chromosome, they are said to be linked. This means that the genes are physically connected and will be inherited together more often than not.
- During meiosis, homologous chromosomes pair up and exchange genetic material through a process called crossing over. This results in new combinations of alleles on the chromosomes.
- However, if two genes are linked, they will not be separated by crossing over as often as genes that are on different chromosomes. This means that the parental combinations of alleles will be more common than the recombinant combinations.
- In the case of the F1 dihybrid flies, the fact that more parental-type offspring were produced than recombinant-type offspring indicates that the two genes controlling the traits are linked and located on the same chromosome.
In summary, the observation of more parental-type offspring than recombinant-type offspring in a testcross involving F1 dihybrid flies suggests that the two genes controlling the traits are linked and present on the same chromosome.
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In a testcross involving F1 dihybrid flies, more parental-type offspring were produced than therecombinant-type offspring. This indicates :a)Both of the characters are controlled by more than one gene.b)The two genes are located on two different chromosomes.c)Chromosomes failed to separate during meiosis.d)The two genes are linked and present on the same chromosome.Correct answer is option 'D'. Can you explain this answer?
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In a testcross involving F1 dihybrid flies, more parental-type offspring were produced than therecombinant-type offspring. This indicates :a)Both of the characters are controlled by more than one gene.b)The two genes are located on two different chromosomes.c)Chromosomes failed to separate during meiosis.d)The two genes are linked and present on the same chromosome.Correct answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about In a testcross involving F1 dihybrid flies, more parental-type offspring were produced than therecombinant-type offspring. This indicates :a)Both of the characters are controlled by more than one gene.b)The two genes are located on two different chromosomes.c)Chromosomes failed to separate during meiosis.d)The two genes are linked and present on the same chromosome.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a testcross involving F1 dihybrid flies, more parental-type offspring were produced than therecombinant-type offspring. This indicates :a)Both of the characters are controlled by more than one gene.b)The two genes are located on two different chromosomes.c)Chromosomes failed to separate during meiosis.d)The two genes are linked and present on the same chromosome.Correct answer is option 'D'. Can you explain this answer?.
In a testcross involving F1 dihybrid flies, more parental-type offspring were produced than therecombinant-type offspring. This indicates :a)Both of the characters are controlled by more than one gene.b)The two genes are located on two different chromosomes.c)Chromosomes failed to separate during meiosis.d)The two genes are linked and present on the same chromosome.Correct answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about In a testcross involving F1 dihybrid flies, more parental-type offspring were produced than therecombinant-type offspring. This indicates :a)Both of the characters are controlled by more than one gene.b)The two genes are located on two different chromosomes.c)Chromosomes failed to separate during meiosis.d)The two genes are linked and present on the same chromosome.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a testcross involving F1 dihybrid flies, more parental-type offspring were produced than therecombinant-type offspring. This indicates :a)Both of the characters are controlled by more than one gene.b)The two genes are located on two different chromosomes.c)Chromosomes failed to separate during meiosis.d)The two genes are linked and present on the same chromosome.Correct answer is option 'D'. Can you explain this answer?.
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